Hey there! :)
Answer:
f(3) = 18.
Step-by-step explanation:
Given:
f(x) = 2x², solve for f(3).
Simply substitute in 3 for x:
f(3) = 2(3)²
f(3) = 2(9)
f(3) = 18.
Answer:
16.45
Step-by-step explanation:
To find the tip we take the bill and multiply by the tip percent
tip = bill * tip percent
tip = 109.66 * 15%
= 109.66* .15
= 16.449
We round to the nearest cent
= 16.45
Answer:
Sheila had $300 at first
Step-by-step explanation:
Given that:
Sheila spent:
for coat = $120
Let the original money be x so,
dress for = $(2/3(x - 120 ))
Now she left with = 1/5x
Now by adding all the amounts we get the original amount x:
x = 120 + (2/3(x - 120)) + 1/5x
By simplifying:
x = 120 + 2/3x - 240/3 + 1/5 x
adding like terms:
x = 120 - 80 + 2/3*5/5x + 1/5*3/3x
x = 40 + (10+3)x/15
x = 40 + 13x/15
x - 13x/15 = 40
Taking LCM
(15x - 13x)/15 = 40
2x/15 = 40
Multiply both sides by 15/2
x = 40*15/2
x = $300
so Sheila had $300 at first
i hope it will help you!
Answer:
A.
Step-by-step explanation:
