If a= 4.2 to (1dp) and b = 18 (to the nearest whole number), Find the lower and upper bound of the following: ((a+b)/a)

Lower bound = 5.2

Upper bound = 5.4

Step-by-step explanation:

If a= 4.2 to (1dp):

Upper bound = 4.2 + 0.05 = 4.25

Lower bound = 4.2 - 0.05 = 4.15

If b = 18 (to the nearest whole number)

Upper bound = 18 + 0.5 = 18.5

Lower bound = 18 - 0.5 = 17.5

Therefore:

Lower bound of ((a+b)/a) = ((4.15 + 17.5) / 4.15) = 5.2 to 1 decimal place

Upper bound of ((a+b)/a) = ((4.25 + 18.5) / 4.25) = 5.4 to 1 decimal place

The upper and lower bound are calculated to one decimal place.

connie < felicia < stew

step-by-step explanation:

stew:

we need to find the slope

m = (y2-y1)/ (x2-x1)

    = (2650-795)/(10-3)

    = 1855/7

265 words per minute

connie:

we need to find the slope

m = (y2-y1)/ (x2-x1)

we have two points (0,0) and (4,800)

m = (800-0)/(4-0)

  m = 800/4

    200 words per minute

felicia:

260 words per minute

200< 260 < 265

connie < felicia < stew