Find the solution to each equation mentally or use your calculator. (Hint: do the opposite of the number on the left side of the equation) .

A: 30+a=40

B: 500+b=200

C: −1+c=−2

D: d+3,567=0

PLEASE ANSWER EACH ONE IM HAVING TROUBLE PLSSS HELP :( IM GONNA FAIL

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Which of the following circles have their centers in the third quadrant?