Respuesta :
Answer:
Step-by-step explanation:
a) Let the cost of a Pizza = $ x
Cost of three pizza's = 3 *x = 3x
cost of 3 pizza + cost of a salad = $ 20.7
3x + 3 = 20.7
b) 3x + 3 = 20. 7 {Subtract 3 from both sides}
3x = 20.7 - 3
3x = 17.7 {Divide both sides by 3}
x = 17.7/3
x = 5.9
Cost of one pizza = $ 5.9
Part A
$20.70=3p+3
Part B
$20.70=3p+3
$17.90=3p
$5.90=p
So the cost of one pizza is $5.90
$20.70=3p+3
Part B
$20.70=3p+3
$17.90=3p
$5.90=p
So the cost of one pizza is $5.90