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Mathematics, 31.01.2020 03:01 hmontalvo22
1. define the variable in the following situation: the perimeter of a square is equal to 4 times the length of a side.
a. perimeter
b. length of side
c. square
d. 4 times
2. write an algebraic expression for the following. the sum of 12 and 3 times a number
a. 12+3
b. 12+3n
c. 12n+3
d. 15
3. write an algebraic expression for the following. the sum of 8 and x minus 3.
4. which equation models the following situation? what is the number of slices of pizza left from a 12-slice pizza after you have eaten some? let n equal the number of slices of pizza left and e equal the number eaten.
a. n + 12 = e
b. p = n + 12
c. n = e + 12
d. n = 12 - e
9. a gas and electric bill totals $324.86. if x represents the charge for electricity, which of the following expressions represents the charge for gas?
a. $324.86x
b. $324.86 + x
c. $324.86 - x
d. $324.86 / x
10. a parking garage charges $1.50 for the 1st hour of parking and $0.75 for each addtional hour. what is the cost in dollars for parking 7 hours? show your work.
8. evaluate the following expression for a = 2, b = 3 and c = -4: a(b - c)2
10. evaluate the following expression for a = 6, b = 3 and c = 4.
a ÷ b + 2c
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