Answer:
44
Step-by-step explanation:
Hello There!
To solve this one all we have to do is plug in 5 for a
so
9(5)-7+6
9x4=45
45-7=38
38+6=44
so when a=5 the value of the expression is 44
f(x)=.24x+.39
f(x)=.24(19)+.39
f(x)=4.95
You would be spending $4.95.
Hope this helps!
Answer:
x<= 2
Step-by-step explanation:
4x-24x+30>+8-8x
-12x-24x+30>=8
-12x>=-24
x<-2
Answer:
67 gallons.
Step-by-step explanation:
To determine how many gallons of a 70% antifreeze solution must be mixed with 90 gallons of 15% antifreeze to get a mixture that is 60% antifreeze, the following calculation must be performed:
0.15 x 90 + 0.70 x 10 = 20.5 / 100 = 0.20
0.15 x 90 + 0.70 x 30 = 34.5 / 100 = 0.34
0.15 x 90 + 0.70 x 60 = 55.5 / 100 = 0.55
0.15 x 90 + 0.70 x 67 = 60.4 / 100 = 0.60
Thus, 67 gallons of 70% antifreeze solution will be needed to achieve a 60% mix of that solution.
C. the function exhibits exponential growth because the balance increases by a constant percent rate.
We know this because there is an exponent on the 1.03 and the balance is positive