7th grade ! !
1. sam solved the following problem:
-4x + 5 > 29
...
Mathematics, 11.01.2020 05:31 yessy73
7th grade ! !
1. sam solved the following problem:
-4x + 5 > 29
-4x + 5 - 5 > 29 - 5
-4x > -24
-4x/-4 > -24/-4
x > 6
what were his two mistakes? (3 points)
2. hillary buys 3 pounds of gala apples and some granny smith apples. both kinds of apples cost $4.50 per pound. the total cost is $24.75. how many pounds of granny smith apples did hillary buy? write and solve a variable equation. show your work.
(4 points)
3. tell whether each equation has one solution, infinitely many solutions, or no solution. (3 points)
6x + 8 = 6(x + 2)
10x = 15 + 5x
x + 11 = 8x + 11 - 7x
Answers: 1
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