Alex bought a guitar pick for 25cents he paid the exact amount so he recieved no change. a)list the combinations of coins that alex could have used. b) what is the least number of coins that alex could have used. c) what is the greatest number of coins that alex could have used. d) could he have paid for the guitar pick using seven coins

4

step-by-step explanation:

2/3

step-by-step explanation:

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm

#12 the answer is the third option