84 pts ! and brainliest to first correct answer marika is training for a track race. she starts by sprinting 100 yards. she gradually increases her distance, adding 4 yards a day for 21 days. which explicit formula models this situation? a. an = 21 + (n – 1)4 b. an = 4 + (n – 1)100 c. an = 100 + (n – 1)4 d. an = 100 + (n – 1)21

c is the answer, n is how long it take her

its most likely c im pretty sure

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

~

their is no graph showing

step-by-step explanation: