8x + 42 = 90
8x = 90 - 42 = 48
x = 48/8 = 6 answer
Since 3:00 a.m is three hours after midnight, the variable h in the function would be three.
T(h) = -15 + 3h step 1 - write the equation
T(3) = -15 + 3(3) step 2 - plug in h, which is three
T(3) = -15 + 9 step 3 - simplify the expression
T(3) = -6
Answer:
The cost of a combo meal is $8 and a salad is $4.
Step-by-step explanation:
You have to form simultaneous equations with the given informations. Let combo meal be m and salad is s :


Next, you have to solve these equations :






