Can anyone help me with the formula and how to do this

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

If y varies directly as x2 and y=6 when x=6, find the constant of variation.