A small tree was planted at a height of 7 feet. The tree has been planted for 15 months, and is now 44.5 feet tall. Which equation could be used to find x, the average number of feet the tree grew each month?
A. 15x + 44.5 = 7
B. 7x + 15 = 44.5
C. 15x + 7 = 44.5
D.
44.5x + 7 = 15

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

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step-by-step explanation:

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

i think the answer is b. i hope i !