F(x) = 5x
for f(7) you replace x with 7 so it will be : f(7) = 5(7) = 35
Answer:
2.25 ounces
Step-by-step explanation:
22+11.2+16.3=49.5
49.5/22=2.25
Answer:
3xy
Step-by-step explanation:
Answer:
1500 * 4 = 6000
Step-by-step explanation:
1500 * 4 = 6000
X2 + 14X = -49
+49
x2 + 14X + 49
(x2 + 14X + 7) + 49 - 7 = 0
(X+7)2 + 42 = 0
- 42
(x+7)2 = 42
*square root of both sides)
X + 7 = square root of 42
-7
X = -7 +/- square root of 42
x = -13.48
x = -0.52
and for b, without doing any work my guess is because there is a 0 under the radical, which gives you only one real solution