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Gala2k [10]
3 years ago
14

Find f(-7) if f(x) = 2x + 8.A. -6 B. 2 C. 3 D. 22​

Mathematics
1 answer:
spayn [35]3 years ago
7 0
To find f(-7), just plug -7 in for all x

2(-7) + 8
-14 + 8
-6 is the answer!
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Explain how you can use base ten blocks to find 1.54+ 2.37
solong [7]
0.00

*First column to your left - ones column (1)
*Column just after decimal place, in the middle - tenths column (1/10)
*Column to the far right - hundredths column (1/100)

The only numbers that can go in these columns are 0-9.

-------------

1.54 + 2.37 

= (1 + 5/10 + 4/100) + (2 + 3/10 + 7/100)

= 1 + 5/10 + 4/100 + 2 + 3/10 + 7/100

= 3 + 8/10 + 11/100

= 3 + 8/10 + (10/100 + 1/100)

= 3 + 8/10 + (1/10 + 1/100)

= 3 + 8/10 + 1/10 + 1/100

= 3 + 9/10 + 1/100

= 3.91
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3 years ago
Inequality: a checking-account balance is no more than $500
matrenka [14]

x≤ 7 is the answer I could find hope it helps

3 0
3 years ago
A coffee shop sells regular coffee in three sizes. The table shows the sizes of each regular coffee sold throughout the day. Wri
kenny6666 [7]

Answer:

c) bajo: $1.62; mediano: $1.80; grande: $2.03

Step-by-step explanation:

Insert numbers from the table into a linear equation (ignore time column) and use Cramer's Rule.

55x+53y+54z=299.12

17x+22y+25z=117.89

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x, bajo = 1.62

y, mediano = 1.8

z, grande = 2.03

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3 years ago
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