Which graph represents an exponential function?

1 answer:

3 0

An exponential function has a graph that is a smooth curve; it either increases at an ever increasing rate or decreases at an ever increasing rate. The only graph that fits these characteristics is the first one.

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Can someone please help me with this???

MrRa [10]

Answer:

my estimation is 67

Step-by-step explanation:

6 0

3 years ago

Tanisha and Rebecca are signing up for a new cell phone plan to only charge for the number of minutes and everything else includ

xeze [42]

Answer:

see the explanation in the procedure

Step-by-step explanation:

The complete question is

Tanisha and Rebecca are signing up for the new cellphone plans that only charge for the number of minutes and everything else is included in a monthly fee. Their plans are as follows:

Tanisha s Plan: $0.15 per minute used talking and a $25 monthly fee

Rebecca s Plan: $0.10 per minute used talking and a $18.50 monthly fee

After how many minutes will the two plans charge the same amount?

Let

x ----> the number of minutes

y ---> the total charge in dollars

we know that

Tanisha s Plan

$y=0.15x+25$ -----> equation A

Rebecca s Plan

$y=0.10x+18.50$ -----> equation B

To find out after how many minutes will the two plans charge the same amount, equate equation A and equation B

$0.15x+25=0.10x+18.50$

solve for x

$0.15x-0.10x=18.50-25$

$0.05x=-6.5$

$x=-130\ min$

therefore

They will never pay the same amount , because the time cannot be a negative number.

Rebecca s Plan is better than Tanisha s Plan because it has smaller fee and less cost per minute

4 0

3 years ago

Each side of the first figure is one unit copy and complete the table then find the function rule for the relationship between t

sergij07 [2.7K]

Perimeter of a shape is the total length of its border

Figure 1, perimeter = 5 units
Figure 2, perimeter = 7 units
Figure 3, perimeter = 9 units
Figure 4, perimeter = 11 units

Notice that the perimeter is forming an Arithmetic sequence; 5, 7, 9, 11 with a common difference of 2

The general form of an Arithmetic sequence is

$n_{th}term=dn+0^{th}term$

Where 'd' is a common difference and 'n' is the number of terms.

We have d = 2, and
zero term = the term before the first term = 3

$n_{th}term=2n+3$ ⇒ This is the rule to find the perimeter of the next figures