Martin was given 10 math problems, and he has answered 7 of them. what percent of the problems does martin have left to do?

a) 3% b) 7% c) 30% d) 70%

i need the answer like right !

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)

The mean average cost of standard room per night at a hostel is ? 20.60. therefore, how much does a standard room cost per night at night-time rest days?