For f(x) = -2x + 7, find the value of f(-1) + f(4)

Answer= 8

Step-by-step explanation:

step1: find f(-1) by subbing -1 for x in the equation f(x)=-2x+7.

f(-1)= (-2×-1)+7

= 2+7 = 9

step2: find f(4) by subbing 4 for x in the same equation before.

f(4)= (-2×4)+7

= -8+7 = -1

step3:add both previous answers to get the final solution.

f(-1)+f(4)

= 9 + (-1)

= 8

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18. g

20. h 30 degree turn.

21. d 90 degree angles

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use the power rule  

( a b ) n = a n b n

to distribute the exponent.

apply the product rule to  

3 x 2 y 3 . ( 3 x 2 ) 2 ( y 3 ) 2

apply the product rule to  

3 x 2 . 3 2 ( x 2 ) 2 ( y 3 ) 2

raise  

3

to the power of  

2 . 9 ( x 2 ) 2 ( y 3 ) 2 multiply the exponents in   ( x 2 ) 2

.

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 2 ⋅ 2 ( y 3 ) 2

multiply  

2   by   2 . 9 x 4 ( y 3 ) 2

multiply the exponents in  

( y 3 ) 2 .

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 4 y 3

⋅

2

multiply  

3   by   2 . 9 x 4 y 6

step-by-step explanation: