Aprepaid phone card purchased at phone ahead an airport franchise costs 7.50 for 60 minutes. find the cost per minute

Step-by-step explanation:

60 minutes cost 7.50 dollars = 750 cents.

1 minute costs x

60/1 = 750/x                Cross multiply

60x = 750                    Divide by 60

x = 750/60

x = 12.5 cents.

If you leave it in dollars then the cost is

0.125 dollars.

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1