6000 - 1800 = 4200
4200/4 = 1050
so she donated 25% to charity
60 plain pizzas last week
42 fewer pizzas this week
Number of pizzas sold this week = 60 - 42 = 18
60 ------------------------- 100
18 ------------------------ x
x = (18 x 100)/60
x = 1800/60
x = 30%
The percent change will be 100 - 30 = 70%
Answer:
17/22
Step-by-step explanation:
8/11+1/2=16/22+11/22=17/22
The GCF of 3x^4 +18x is 3x. 3x^4 and 18x can both be divided by 3x. 3x(x^3+6)