Joan earned 60% of the possible points on his 1st math test. his teacher offered him to take another test for extra credit, on the extra credit test joan earned 80% of the possible points. each test had the same number of points if joan scored 30 points on the 1st math test. how many did he score on the 2nd?

0.6a=30

Therefore, a=50 pointe

80%=0.8a

=0.8*50

=40 points

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.

the probability that a bird is green (.30) is true

step-by-step explanation: