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3 years ago

Guys please help me I’ll give u 7 points and mark brainliest need asap

Mathematics

1 answer:

enot [183]3 years ago

8 0

Answer:

a. y = 3x + 4.5 & y = 7x + 2

b. x = 0.625 (year)

c. 6.375 feet

Explanation:

Type A starts at 4.5 and Type B starts at 2 ,each year can be marked as x

type A grow 3 inches per year = 3x

type B grows 7 inches per year = 7x

y = the total height

Since they both equal to y, you can set them equal to each other

3x + 4.5 = 7x +2

After solve you get answer for b

Work: 3x + 4.5 = 7x + 2

4.5 = 4x + 2

2.5 = 4x

0.625 = x

Substitute the value of x you got from part b into each equation then you will get 6.375 as your y value which is also your height

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