The number of pens sold on Monday, p, increased 45% on Tuesday. The expression p+0.45p represents the number of pens sold on Tuesday. What is another expression that can be used to find the number of pens, p, sold on Tuesday?

1.45p

Step-by-step explanation:

Here, we want to write another expression other than what we have already to represent a 45% increase in the number of pens sold

We simply find 45% of the number of pens sold the previous day

Mathematically, that would be

45/100 * p = 0.45p

we now add this to the sales made the previous day

= p + 0.45p

if we finally add both, we will have p(1 + 0.45)

= 1.45p

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

the answer is  

a.

4,624π mm2

step-by-step explanation: