Your friend shows you a collection of coins. in it, 28/50 of the coins are quarters. what percent of the coins are quarters

Jada has a monthly budget for her cell phone bill. last month she spent 120% of her budget, and the bill was 60$. what is jada’s monthly budget

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?