If you have something that says it is the f(x) or just f(something) then that is just telling you what the x equals. In this case, x=4 so you plug that into the equation.

This gives you f(4)=4(4)+7. From here, you will use the order of operations to solve.

f(4)=4*4+7

f(4)=16+7

f(4)=23

8 0

2 years ago

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ms. Cho bought 1/3 yard of wool and 5/8 of oil. the wool cost $9 per yard and the silk $12 per yard. how much did Ms. Cho spend

iren [92.7K]

Wool = $3
Silk = $7.5
So $10.50 in total.
Hope it helps!

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2 years ago

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Solve -1 4/5 x= 9. <br> A) 5 <br> B) 1/5 <br> C) -5 <br> D) -1/5

Darina [25.2K]

Answer:

Step-by-step explanation:

Express - 1 $\frac{4}{5}$ as an improper fraction, that is

- $\frac{9}{5}$ x = 9 ( multiply both sides by 5 )

- 9x = 45 ( divide both sides by - 9 )

x = - 5 → C

7 0

2 years ago