42) kathryn won 35 super bouncy balls
playing hoops at the county fair. at
school she gave one to every student in
her math class. she only has 12
remaining. how many did she give away?

 Kathryn has 23 super bouncy balls left

Step-by-step explanation:

first you need to subtract 35 by 12. you can do this by doing 5 minus 2 which is 3 and 3 minus 1 which is 2 then you add 2 and 3  together and get 23.

step-by-step explanation:

f

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58