Answer:
x ≈ 14.7
Step-by-step explanation:
use pythagorean therorem
a^2 + b^2 = c^2
c is hypotenuse and we know the hypotenuse is 21
x^2 + 15^2 = 21^2
x^2 + 225 = 441
x^2 = 216
x = √216
33
put 4 in for x and then solve
5+7(4)
5+28
yes
Cost of 4 muffins = $3.45
Cost of 12 muffins = (3 sets of x 4 muffins = 12)
Cost of 3 sets of muffins = $3.45 x3 = $10.35
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