Heather has $500 in her saving acount . she withdraws $ 20 per week for gas . write an equation healthy can use to see how manyweek it will take her to have a balance of $220

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter μ. select the correct answer below: h0: μ≥40; ha: μ< 40 h0: μ≤40; ha: μ> 40 h0: μ≠40; ha: μ=40 h0: μ=40; ha: μ≠40