PLEASE PLEASE HELP ASAP

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

The sum of two numbers is 58. the first number is 8 less than half the second number. let  c  represent the first number. let  drepresent the second number. which statements about solving for the two numbers are true? check all that apply.the equation    represents the sum of the two numbers.the equation    represents the sentence “the first number is 8 less than half the second number.”the equation    represents the relationship between the two numbers.the equation    represents the sum of the two numbers.the number  d  is 14.the number  c  is 44.the number  c  is 14.the number  d  is 44.

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?