He put in 1 extra cup because the recipe only needed 3. 4-3=1.
To find 15% of something, you would multiply 0.15 by the number you are trying to find 15% of.
Let p be the pre-tax cost. Then 1.08p = $50. Solving for p, the pre-tax cost, we get:
p = ($50) / (1.08) = $46.30.
Answer:
A = 78.5 cm^2
Step-by-step explanation:
The area of a circle is given by
A = pi r^2
We know r =5 and pi = 3.14
A = 3.14 (5^2)
A = 3.14 (25)
A = 78.5 cm^2