Step-by-step explanation:
1. the table on the left is a function, with the formula : y = x²
2. the table on the right is also a function, indicated by the values of the input are different each others
Answer:
words per minute = 228/4
Carlos can type 57 words per minute.
Step-by-step explanation:
X< -2, means all numbers less than -2,
-3,-4,-5 and so on
Correct answer is -3
Answer:
D. 2.6
Step-by-step explanation:
|-2| is an absolute value.
absolute values describe the amount of distance from 0
so -3 is 3 away from 0 on a number line. 3 is 3 away from 0 on a number line.
so |-2| + |0.6| can be simplified to
2 + 0.6
D. 2.6
Answer:
$11,250
Step-by-step explanation:
Normally, when I work "mixture" problems, I like to choose the variable so it represents the amount of the largest contributor. Here, that would be the amount invested at 15%.
Unfortunately, the question asks for the amount invested at 7%. Using a variable to represent that amount means that there will be negative numbers involved. Care must be taken in the arithmetic.
Let x represent the amount invested at 7%. Then 16000-x is the amount invested at 15%. The total interest for one year is ...
0.07x + 0.15(16000 -x) = 1500 . . . . sum of interest amounts at each rate
-0.08x +2400 = 1500 . . simplify
-0.08x = -900 . . . . . . . . subtract 2400
x = 11250 . . . . . . . . . . . . divide by -0.08
The bank loaned $11,250 at 7%.
