If she did not reach her goal then
miles she drove must be less than 385
or
miles she drove<385
so rate=55 miles per hour
so
miles driven=h times 55
subsitute
55 times h<385
divide both sides by 55
h<7
she drove less than 7 hours
inequality=55h<385
h<7
The equation for surface area is:
. To get r, you must use Pythagorean theorem. r is found to be 45. This means after you plug it in, you get about
13571.68
We can use the rule of three to figure out what's 5% of 79:
100/79=5/x
x= (79*5/100)=3.95
Let's add said 5% to 79:
79+3.95=82.95