you paint 1/2 the wall in 1/4 of the hour or 15 min. but you need to paint the whole wall so 15*2=30 so you can finish painting 30 min or 2/4 or .5 of the hour
option a. 4, 4.5, 5, 5.5
left point: a=x=4
right point: b=x=6
width of each of the four equal intervals: w=2/4→w=0.5
the first left endpoint is x1=a→x1=4
the second left endpoint is x2=x1+w→x2=4+0.5→x2=4.5
the third left endpoint is x3=x2+w→x3=4.5+0.5→x3=5
the fourth left endpoint is x4=x3+w→x4=5+0.5→x4=5.5
then, the list is: x1, x2, x3, x4 = 4, 4.5, 5, 5.5
the amount of simple interest is computed using the formula
i = prt
where i is the interest earned; p is the principal invested at rate r for time period t.
fill in the given information and solve for p.
$2625 = p·0.035·5
$2625/0.175 = p = $15,000
samuel deposited $15,000 in the account.