A sports trainer has monthly costs of $68.29 for phone service and $45.42 for his website and advertising. In addition he pays a $20 fee to the gym for each session in which he trains' a client.

A) write the function to represent the cost C(x) for x training sessions.

B) write a function representing the average cost C(x) for x sessions.

C) Evaluate C(10), C(50), C(100). Round your answer to two decimal places if necessary.

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step-by-step explanation:

x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

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