On monday morning, the temperature was 68 of; but, by the afternoon, the temperature had risen 18 of. on tuesday morning, the temperature had dropped 21 of since monday afternoon, but rose 20 of by the noon. how many degrees above or below 68 of is the temperature on tuesday at noon?

We are given

For Monday:

Morning temperature =68 F

but, by the afternoon, the temperature had risen 18 oF

so, afternoon temperature =68+18=86F

For Tuesday:

the temperature had dropped 21 oF since Monday afternoon

so, morning temperature=86-21=65F

but rose 20 F by the noon

so, noon temperature =65+20=85F

now, we can find temperature difference

temperature difference = 85F-68F

temperature difference = 17FAnswer

it is b)

hope this : )

step-by-step explanation: