$3.60 for 2 cups would be $1.80 for one cup.
$3.60 for 2
$5.40 for 3
$7.20 for 4
$9 for 5
$10.80 for 6
$12.60 for 7
$14.40 for 8
∈ ≤ ≥
-6 ≤ 2x + 6 ≤ 6 ( seperate the two inequalities)
2x + 6 ≥ - 6
2x + 6 ≤ 6 (solve the inequalities)
x ≥ -6
x ≤ 0 (find the intersection)
solution is : x ∈ { -6, 0 }
You have to choose 1 sort of cheese from 3 ( 3 ways ). Also you have to choose 3 toppings from 12 different toppings:
12 * 11 * 10 = 1,320 ways.
In total: 3 * 1,320 = 3,960
Answer:
In 3,690 ways can pizza be made with 1 cheese and 3 toppings.
X=−13
Distribute
Subtract
simplify
divide both sides
then simplify again to arrive at your answer.
