Let x = 2. Evaluate the expression.

x + 43x

88

Step-by-step explanation:

x + 43x

(2) + 43(2)

2 + 86

88

88

Step-by-step explanation:

x = 2

x + 43x

If x = 2 then substitute 2 for all of the x's

2 + 43 (2)

The next thing you do is:

43 (2) = 86

Then add 2

86 + 2 = 88

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.