58 = ??

36 = 84

64 = 56

78 = 24​

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?