Answer:A
Step-by-step explanation:
3a - 4b = 21
check (-2 , -3)
3(-2) -4(-3) =21
-6 +12 = 21
6 does not = 21 so NO
check (0 , 7)
3(0) -4(7) =21
0-28=21
-28 does not equal 21 so NO
check (-3 , -2)
3(-3) -4(-2) =21
-9 +8 = 21
1 does not = 21 so NO
check (7 , 0)
3(7) -4(0) =21
21 = 21
Choice D
Answer:
x + 14.7
Step-by-step explanation:
Simply combine like terms. Constants go with each other and <em>x</em> terms go with each other.
6.2 + 8.5 = 14.7
x = x
x + 14.7
Answer:
15 pounds
Step-by-step explanation:
there are 16 ounces in one pound
so...
first find the limit in ounces

because there are 16 ounces in every one pound you need to multiply 22 by 16
which is 352
now subtract what you already used

which is 240
now convert to pounds

which is 15
so 15 more pounds
Answer:
9
Step-by-step explanation:
substituting 2 for the x
y = 2(2) + 5
y = 4 + 5
y = 9