Answer:
The minimum number of nickels that she could have is 15
Step-by-step explanation:
Let x represent the number of nickels Ashley has. If she has 4 pennies and has at most 22 coins, then
→ x + 4 <= 22
→ x <= 18 (1)
Her coins worth a minimum $0.78. Also, it is known that 1 dollar is equal to 100 cents and 1 nickel is equal to 5 cents.
→ (x * 5) + 4 >= 78
→ 5x >= 74
→ x >= 14.8 (2)
If we combine the equation 1 and 2:
14.8 <= x <= 18
The minimum value of x is 15
18 nickels
4 pennies = $0.04. 22 coins minus the 4 pennies = 18. So, 18 nickels is equal to $0.90. Because she has at most 22 coins and they're worth at least $0.78 then $0.94 would make since.
LOOK IT UP ON GOOGLE OR CHROME!!
yaaa
1) 32
2) 3
3) 135
to know: when multiplying terms with same base and exponents, multiply the bases and add the exponents
to know: when dividing terms with same base and exponents, divide the bases and subtract the exponents
to know: whenever exponents are contained within a set of parentheses and separated by another set of parentheses, multiply the exponents
1) (· · ) ÷ 2³ = 3
2) (15· 25j²) ÷ 5³j³k³ = (375) ÷ 125j³k³ = 3
3) (5 · 3³) = 135