You replace x by 18 so it becomes f(18)=1.50×18+12.50 and that should give you 39.50
In order to answer any question, reasonable people use
the information they're given, together with what they know
about the situation.
You've given us no information, and we know nothing about
the situation, so we basically don't stand a chance.
V = pi * r^2 *h
where r is the radius and h is the height of the cylinder
V = pi * 7^2 *4
V = pi* 49*4
pi is approximated by 3.14 or 22/7
V = 22/7 * 49 * 4
V = 616 units ^3
First, change the mixed fraction into improper fraction
1 1/7 = 7/7 + 1/7 = 8/7
(4/7)/(8/7)
To solve, flip the second fraction, and change the division into multiplication
(4/7)/(8/7) = (4/7) x (7/8)
Multiply, and simplify
(4/7) x (7/8) = 28/56, or 1/2
1/2 is your answer
hope this helps
The value of a lower quartile is always the start of the box making your answer the number 2