An elephant needs to drink at least 40 gallons of water each day. a drinking tank contains 4 gallons of water. the elephant has already consumed 24 gallons of water. how many tanks x of water does the elephant need to drink? write your answer as an inequality. the solution {will receive 15 pts.}

Solve the system of equations. x=-2y+1 and x+2y=9. show work

Atest of sobriety involves measuring the subject's motor skills. a sample of 31 randomly selected sober subjects take the test and produce a mean score of 64.4 with a standard deviation of 2. a claim is made that the true mean score for all sober subjects is equal to 65. for each part below, enter only a numeric value in the answer box. for example, do not type "z =" or "t =" before your answers. round each of your answers to 3 places after the decimal point. (a) calculate the value of the test statistic used in this test. test statistic's value = (b) use your calculator to find the p-value of this test. p-value = (c) use your calculator to find the critical value(s) used to test this claim at the 0.2 significance level. if there are two critical values, then list them both with a comma between them. critical value(s) =

Factor the gcf out of the polynomial 9x^6+6x^4+15x^3